From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Design of E.A.C.11 and Goshawk 11 pistons, specifically the piston pins and plugs.
| Identifier | ExFiles\Box 77\3\ scan0279 | |
| Date | 8th July 1924 | |
| Ro{C. C. Rose - Export Manager} BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} c. to CJ. HS.{Lord Ernest Hives - Chair} X4224 S E C R E T. E2/M18.7.24. E.A.C.11. AND GOSHAWK 11. PISTONS. X.4224 X.9040 We send you herewith drawing No.Le.C.1901., shewing floating piston pins with spherical ends for the above. The piston pins are held in place by the cyl- inder bores, and the latter are prevented from being damaged by spherical aluminium plugs pressed into the ends of the piston pins. Care will be needed to avoid distorting the pin when assembling the plugs, since the former is such an exact fit in the pistons. Trouble might be expected due to the piston pins being driven out, and this action collapsing the plugs. If this is so, the plugs may be thickened. The EAC. piston shewn is similar to the one already designed for the longer connecting rods, and we should like to point out that its general thickness as shewn on this and the original drawing, is less than the standard 40/50 piston. E.{Mr Elliott - Chief Engineer} | ||